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13
Answer:
A motion sensor (or motion detector) is the linchpin of your security system because it detects when someone is in your home when they shouldn't be. A motion sensor uses one or multiple technologies to detect movement in an area
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Answered by
4
1.
a) 8.1 b) 0.27
2.
a) 4.063 b) 10.8
3.
a) 8.625 c) 0.3509
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